Teat and valve for feeding bottles



Aug. 23, 1927. 1,640,152

j w. c. INGRAM ET AL TEAT AND VALVE FOR FEEDING BOTTLES Filed Jan. 4,1927 Fig. 9.

@gumi 1 W W W WWEWV Patented Aug. 23, 1927.

UNITED STATES PATENT OFFICE.

WILLIAM CONRAD INGRAM". AND ERNEST JAMES EVEREST, OF HACKNEY WICK,

LONDON, ENGLAND.

TEAT AND VALVE FOR FEEDING BOTTLES.

Application filed January 4, 1927, Serial-No. 158,939, and in GreatBritain November 25, 1926.

The invention relates to that type of india rubber teats and valves forfeeding bottles in which those parts which are stretched around the twoopen ends of the bottle are strengthened by means of an india rubberband, the main part of the teat and valve being formed by dipping amould of the desired shape.

Although such teats and valves obtain a better grip of the bottle thanteats which are merely made by dipping, there is a ten dency for them tosplit if stretched over the ends of a bottle having larger aperturesthan the bottles for which they are designed.

The object of the present invention is to overcome this defect and toprovide teats and valves which will obtain even a better grip than theteats hitherto made.

According to the present invention the perforated closure device,whether in the form of a teat or valve, is strengthened around the neckportion thereof by means of an inner broad band of india rubber and astrengthenin strip of india rubber, of less width than the broad band,is located between this latter and the body of the closure device.

It will be understood that in use it is the broad band of india rubberwhich is in con tact with the neck of the bottle, and that the strip isaround the exterior of the broad band, thereby strengthening the same.

The improved closure device may be made by various processes one ofwhich is hereinafter described.

The invention is illustrated in the accompanying drawings in which:

Fig. 1 is an elevation of a mould showing the body of a teat thereon.

Fig. 2 is an elevation of a rod upon which the body of the teat isplaced to enable subsequent operations to be carried into effect.

Fig. 3 is a sectional view taken through the axis of a finished teat.

Fig. A is an elevation of a mould showing the body of a valve thereon.

Fig. 5 is an elevation of a rod upon which the body of the valve isplaced to enable subsequent operations to be carried into effect.

Fig. 6 is a sectional view taken through the axis of a finished valve.

Figs. 7 8 and 9 are detail views showing to a larger scale than Figs. 1to 6, various sections of strengthening strips.

As shown in Fig. 1 a is the mould which is dipped as usual into indiarubber solution a suflicient number of times to produce the desiredcoating 1) thereon to form the body of a teat. This body Z2 is thenpartlyis wound a broad strip a of india rubber which adheres to thestrengthening strip and to the body Z). The rod 0 is then withdrawn fromthe completed teat and the vulcanization of this latter is completed inany usual manner. The teat is again turned inside out so that the broadstrip of rubber 6 is in the interior of the body Z) when the teat isready for use, as shown in Fig. 3. The strengthening strip d is thenseen through the body 5 if this latter be made of transparent indiarubber.

As shown in Figs. 2 and 3, the neck has been trimmed off as usual.

As shown in Fig. at, f is a. mould which is dipped a suitable number oftimes into india rubber solution to produce the desired coating 9 toform the body of a valve for a feeding bottle. This coating 9 is partlyvulcanized upon the mould and is then stripped therefrom, but that partof it which is to grip the neck of the bottle is replaced upon the rod 0without turning the body inside out, as shown in Fig. 5.

The lower part of the valve which is to grip the neck is coated withindia rubber solution, and a strengthening strip cl is wound around theneck portion of the valve and is fixed thereto. The outer surface of thestrip (l may likewise be coated with india rubber solution and the broadband of india rubber e is wound around the strip (Z and that part of thebody forming the neck of the valve.

The valve thus completed is removed from the rod 0 and is finally fullyvulcanized. The valve is then turned inside out as is usual, so that thepointed part it is within the upper part of the valve. This pointedpart- 72. is either cut across or split at z' in known manner to producea valve which will allow air lit) to enter the feeding bottle but willprevent escape of liquid therefrom.

It Will be understood that the strengthenin'g strip (Z. may vary incross section, and in Fig. 7 there is shown to a larger scale, a stripwhich is rectangular in cross section, as shown in Figs. 2, 3, 5 and (3.

In Fig. 8 a strengthening strip (Z is shown Which has one flat side toadhere to the body of the teat, and one curved side to receive the broadband 6.

In Fig. 9 the strengthening strip (Z is in the form of a cord and iscircular in cross section.

As teats and valves for feeding bottles are both made in the samemanner, and as they both forni perforated closure devices, the genericterm closure device is hereinafter used in the claims to include botharticles.

hat We claim as our invention is 1. perforated closure device for a feeding bottle having a body, inner broad band of india rubber, and astrengthening strip of india rubber of less Width than the said broadband and located between the broad band and the body of the closure device substantially as set "forth.

2. A perforated closure device for a feeding bottle having' a body madeby dipping a mould into india rubber solution, an inner broad band ofindia rubber, and a strengtlr ening strip of india rubber locatedbetween the broad band and the body 0'! the closure device,substantially as set forth.

3. A perforated closure device for feed ing bottle having a body oftransparent india rubber, an inner broad band of india rubber, and astrengthening strip of india rubber located between the broad band andthe body of the closure device, substantially as set forth.

In Witness whereof We have hereunto set our hands.

WILLIAM CONRAD INGRAM. ERNEST JAMES EVEREST.

